Hideyasu Yuki

Hideyasu Yuki (1 March 1574-2 June 1607), born Ogimaru Tokugawa and later known as Hideyasu Matsudaira, was the second son of Ieyasu Tokugawa and a general of the Toyotomi clan. After being disowned by both, he became a member of the Yuki clan and became a daimyo.

Biography
Ogimaru Tokugawa was the second son of Ieyasu Tokugawa and his concubine Lady Oman. He was born in Ofumi, near Takamatsu Castle in the Tokugawa fief of Mikawa Province. For some reason, he was disliked by his father and after the Battle of Komaki-Nagakute in 1584 he was sent as a hostage to Hideyoshi Hashiba. He was known as "Hashiba Hideyasu", the last name a combination of Hideyoshi and Ieyasu, and he took part in the Pacification of Kyushu in 1587, the Fall of Odawara in 1590, and the invasion of Korea in 1592. But in 1589, he was disowned by Hideyoshi when Hideyoshi had a son, and he was given to Harutomo Yuki as an adoptive son. He married Harutomo's niece and became the heir and later leader of the Yuki clan.

When Hideyoshi died in 1598 he rallied to the Eastern Army cause, fighting against Masanori Fukushima and his Toyotomi loyalists for the army loyal to his estranged father Ieyasu and General Mitsunari Ishida. In the Siege of Kyoto he aided the defeat of Fukushima and Kiyomasa Kato, and fought on his biological father's side at the Battle of Sekigahara in 1600. After the end of the war against the Toyotomi-loyal Western Army, he was granted 110,000 koku. His son Tadanao Matsudaira succeeded him as the leader of the Fukui Domain in Echizen Province.